Hi, To follow up on this...
The easiest way to do what you want is to make a vector made up of <roll, bearing, pitch> in degrees, multiply the vector by DEG_TO_RAD, and then put it through llEuler2Rot. You should then have a good rotation that you can pass to a function that needs it. Hope this helps! - Sophie. On Tue, Jul 31, 2012 at 1:29 PM, Sophira Crystal <sl-...@theblob.org> wrote: > Hi, > > You don't convert degrees to quaternions directly. You convert vectors > to rotations (which are quarternions), and you do that with the > llEuler2Rot function. > > As for the rest of your query, you might find > http://wiki.secondlife.com/wiki/Rotation helpful - I don't know much > about rotations, but I bet the answer you want is probably in there > somewhere. > > I hope my reply's been helpful, even though I personally don't know much... > > - Sophie. > > On Tue, Jul 31, 2012 at 11:54 AM, CJ Davies <cjohndav...@gmail.com> wrote: >> I've been struggling with this for 2 days now & am no closer to working >> it out (despite investigating all sorts of examples online, including >> the SL wiki). >> >> I have a accelerometer/magnetometer that tells me orientation via >> compass bearing, pitch & roll. All of these are in degrees which can >> easily be converted to radians via foo*DEG_TO_RAD. I want to plug these >> values into llcoordframe methods to control where the camera points. All >> of the llcoordframe stuff works in quaternions & I can't for the life of >> me convert properly. >> >> I've just tried following this approach --> >> http://www.euclideanspace.com/maths/geometry/rotations/conversions/eulerToQuaternion/index.htm >> >> But this results in output like this --> http://paste2.org/p/2089138 >> >> Note how the calculated w/x/y/z values change drastically with tiny >> changes in the bearing/pitch/roll, eg between lines 43 & 50 (the >> accelerometer/magnetometer was motionless on the desk at the time!). >> >> Any help greatly appreciated. >> >> Regards, >> CJ Davies >> _______________________________________________ >> Policies and (un)subscribe information available here: >> http://wiki.secondlife.com/wiki/OpenSource-Dev >> Please read the policies before posting to keep unmoderated posting >> privileges _______________________________________________ Policies and (un)subscribe information available here: http://wiki.secondlife.com/wiki/OpenSource-Dev Please read the policies before posting to keep unmoderated posting privileges
